# Round to-do check

> A round check fills in while a line crosses out the task and the text fades back.

- Category: [Checkboxes](https://library.aimran.es/components/checkboxes)
- Built with: HTML + CSS
- Live editor: https://library.aimran.es/blocks/uv-ck2-task
- Library: AIMRAN Library (https://library.aimran.es), free, no sign-up, by Aimran Oukham

## Where to use it

Made for to-do lists: the tasks in a project management app, a packing list for a trip or the steps of a recipe you tick off while cooking. The line slides across the text and the item fades, so what is left to do stands out on its own. A to-do checkbox with strike-through, in HTML and CSS.

It works best when every row has a short label. Long sentences that wrap onto two lines only get the line on the first one, so keep tasks brief or give the list a bit more width.

## Code

### HTML

```html
<label class="uv-ck2t"><input type="checkbox"><span class="bx"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5" pathLength="1"/></svg></span><span class="tx">Finish the design</span></label>
```

### CSS

```css
.uv-ck2t {
  --c1: #0071e3;
  --c2: #8ec5ff;
  --s: 16px;
  /* tamaño */
  --k: 1;
  /* velocidad */
  --fg: #1d1d1f;
  /* texto */
  --bg: #f5f5f7;
  /* fondo */
}

.uv-ck2t {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  color: var(--fg);
  -webkit-tap-highlight-color: transparent;
  display: inline-flex;
  align-items: center;
  gap: .7em;
  cursor: pointer;
  user-select: none;
  font-weight: 500;
}

.uv-ck2t input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.uv-ck2t .bx {
  display: grid;
  place-items: center;
  width: 1.45em;
  height: 1.45em;
  border-radius: 50%;
  box-shadow: inset 0 0 0 2px color-mix(in srgb,var(--fg) 22%,transparent);
  transition: all calc(0.28s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-ck2t svg {
  width: .95em;
  height: .95em;
  color: #fff;
}

.uv-ck2t svg path {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset calc(0.32s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-ck2t .tx {
  position: relative;
  transition: color calc(0.4s / var(--k)) cubic-bezier(.25,.1,.25,1),opacity calc(0.4s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-ck2t .tx::after {
  content: "";
  position: absolute;
  left: 0;
  top: 55%;
  width: 100%;
  height: 1.6px;
  border-radius: 2px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform calc(0.42s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-ck2t:hover .bx {
  box-shadow: inset 0 0 0 2px var(--c1);
}

.uv-ck2t input:checked + .bx {
  background: var(--c1);
  box-shadow: inset 0 0 0 2px var(--c1);
}

.uv-ck2t input:checked + .bx svg path {
  stroke-dashoffset: 0;
}

.uv-ck2t input:checked ~ .tx {
  opacity: .45;
}

.uv-ck2t input:checked ~ .tx::after {
  transform: scaleX(1);
}
```

### React

```tsx
import type { CSSProperties } from "react";

const css = `
.uv-ck2t {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  color: var(--fg);
  -webkit-tap-highlight-color: transparent;
  display: inline-flex;
  align-items: center;
  gap: .7em;
  cursor: pointer;
  user-select: none;
  font-weight: 500;
}

.uv-ck2t input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.uv-ck2t .bx {
  display: grid;
  place-items: center;
  width: 1.45em;
  height: 1.45em;
  border-radius: 50%;
  box-shadow: inset 0 0 0 2px color-mix(in srgb,var(--fg) 22%,transparent);
  transition: all calc(0.28s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-ck2t svg {
  width: .95em;
  height: .95em;
  color: #fff;
}

.uv-ck2t svg path {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset calc(0.32s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-ck2t .tx {
  position: relative;
  transition: color calc(0.4s / var(--k)) cubic-bezier(.25,.1,.25,1),opacity calc(0.4s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-ck2t .tx::after {
  content: "";
  position: absolute;
  left: 0;
  top: 55%;
  width: 100%;
  height: 1.6px;
  border-radius: 2px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform calc(0.42s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-ck2t:hover .bx {
  box-shadow: inset 0 0 0 2px var(--c1);
}

.uv-ck2t input:checked + .bx {
  background: var(--c1);
  box-shadow: inset 0 0 0 2px var(--c1);
}

.uv-ck2t input:checked + .bx svg path {
  stroke-dashoffset: 0;
}

.uv-ck2t input:checked ~ .tx {
  opacity: .45;
}

.uv-ck2t input:checked ~ .tx::after {
  transform: scaleX(1);
}
`;

export default function Ck2Task() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <label className="uv-ck2t"><input type="checkbox" /><span className="bx"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="3" strokeLinecap="round" strokeLinejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5" pathLength="1" /></svg></span><span className="tx">Finish the design</span></label>
      </div>
    </>
  );
}
```

## Prompt for AI assistants

Paste this into ChatGPT, Claude, Cursor, v0 or Lovable to adapt the block to your stack (Tailwind, Vue, Svelte…):

````text
I want to add the “Round to-do check” block (Checkboxes) from AIMRAN Library to my project.

## What it is
A round check fills in while a line crosses out the task and the text fades back.

## Chosen settings
- Main color: #0071e3
- Secondary color: #8ec5ff
- Size: 16px (from 12 to 24px)
- Speed: 1x (from 0.5 to 2x)
- Text: "Finish the design"

## What I need
1. Add it to my project with the same look and animation as the reference code: same sizes, colours, radii, shadows, timings and easing.
2. It is built with plain HTML and CSS (the reference wraps it in a React component with its CSS). If my project uses something else (Vue, Svelte, Astro, plain HTML…), translate it without losing any behaviour. If I use Tailwind, turn the styles into classes; if not, keep the CSS in its own file.
3. Expose the settings above as props (or CSS variables) with those values as defaults.
4. Make it work well on phones: nothing that depends only on hover, touch targets of at least 44 px and no overflow on 320 px screens.
5. Make it look right in light and dark mode.
6. Keep it accessible: semantic HTML, roles and aria-* where needed, visible focus and keyboard support.
7. Respect prefers-reduced-motion: with reduced motion, no big animations but the same end result.

## Reference code
```tsx
import type { CSSProperties } from "react";

const css = `
.uv-ck2t {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  color: var(--fg);
  -webkit-tap-highlight-color: transparent;
  display: inline-flex;
  align-items: center;
  gap: .7em;
  cursor: pointer;
  user-select: none;
  font-weight: 500;
}

.uv-ck2t input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.uv-ck2t .bx {
  display: grid;
  place-items: center;
  width: 1.45em;
  height: 1.45em;
  border-radius: 50%;
  box-shadow: inset 0 0 0 2px color-mix(in srgb,var(--fg) 22%,transparent);
  transition: all calc(0.28s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-ck2t svg {
  width: .95em;
  height: .95em;
  color: #fff;
}

.uv-ck2t svg path {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset calc(0.32s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-ck2t .tx {
  position: relative;
  transition: color calc(0.4s / var(--k)) cubic-bezier(.25,.1,.25,1),opacity calc(0.4s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-ck2t .tx::after {
  content: "";
  position: absolute;
  left: 0;
  top: 55%;
  width: 100%;
  height: 1.6px;
  border-radius: 2px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform calc(0.42s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-ck2t:hover .bx {
  box-shadow: inset 0 0 0 2px var(--c1);
}

.uv-ck2t input:checked + .bx {
  background: var(--c1);
  box-shadow: inset 0 0 0 2px var(--c1);
}

.uv-ck2t input:checked + .bx svg path {
  stroke-dashoffset: 0;
}

.uv-ck2t input:checked ~ .tx {
  opacity: .45;
}

.uv-ck2t input:checked ~ .tx::after {
  transform: scaleX(1);
}
`;

export default function Ck2Task() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <label className="uv-ck2t"><input type="checkbox" /><span className="bx"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="3" strokeLinecap="round" strokeLinejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5" pathLength="1" /></svg></span><span className="tx">Finish the design</span></label>
      </div>
    </>
  );
}
```

Give me the complete final code, ready to paste, and tell me in one line where to put it in my project.
````